1 الحلقة 1 · The Seventh Cycle 15 فبراير 2015 · 24 دقيقة When the pod decides Zac is a threat and must give up his merman powers, two new mermaids, Mimmi and Ondina, are sent to make sure he obeys. 2 الحلقة 2 · Sticky Situation 22 فبراير 2015 · 24 دقيقة With Evie now a mermaid, Mimmi and Ondina try a dangerous spell to change her back to a human form, but the results are less than ideal. 3 الحلقة 3 · Discovery 1 مارس 2015 · 24 دقيقة When Zac has a powerful vision about his connection to Mako Island, he and the mermaids visit the island to investigate. 4 الحلقة 4 · A New Tail 8 مارس 2015 · 24 دقيقة Erik's curiosity about the girls and Mako Island becomes a problem when he decides to investigate further. 5 الحلقة 5 · Bad For Business 15 مارس 2015 · 24 دقيقة When Evie's dad decides to take tourists on dive charters to Mako Island, the gang must find a way to change his mind. 6 الحلقة 6 · Stormy Seas 22 مارس 2015 · 24 دقيقة Sirena gives Evie mermaid lessons, which rubs Ondina the wrong way, while Erik tries to get to the bottom of Zac and Cam's falling out. 7 الحلقة 7 · Awakening 29 مارس 2015 · 24 دقيقة With the full moon approaching, Zac's plan to avoid Mako Island is dealt a blow when his father insists they go on their annual camping trip. 8 الحلقة 8 · Land School 5 أبريل 2015 · 24 دقيقة When Mimmi goes to the first day of the new school year, things get out of hand fast when she runs afoul of the science teacher. 9 الحلقة 9 · Stowaway 12 أبريل 2015 · 24 دقيقة When a young mermaid follows Ondina back to Mako Island after a mermaid council meeting, it could spell trouble with the pod. 10 الحلقة 10 · Keeping The Secret 19 أبريل 2015 · 24 دقيقة When David sees Evie in the water as a mermaid, it puts Zac and the girls' secret at risk unless they can convince David he's wrong. 11 الحلقة 11 · Only As Young As You Feel 26 أبريل 2015 · 24 دقيقة Ondina adds too much jellyfish extract to Mimmi's body lotion, and the results put Principal Santos in dangerous waters at the marine park. 12 الحلقة 12 · Supersized 3 مايو 2015 · 24 دقيقة When Mimmi loses her moon ring in the Ocean Café's cooler room, it creates havoc for David and his brother's business. 13 الحلقة 13 · Reunion 10 مايو 2015 · 24 دقيقة On the night of the full moon, Zac and Erik swim to Mako Island and unlock the merman chamber, revealing a startling secret. 14 الحلقة 14 · A New Man 17 مايو 2015 · 24 دقيقة Zac struggles to come to terms with the news that he's a real merman, he's adopted and Mimmi is his sister. 15 الحلقة 15 · Careful What You Wish For 24 مايو 2015 · 24 دقيقة After Cam absorbs moon pool water, he discovers he has power over water, which gets him a place in the trials for the school swim team. 16 الحلقة 16 · First Date 31 مايو 2015 · 24 دقيقة Ondina sneaks Erik into the grotto to duplicate a pearl he gave her, but she accidentally turns him into a copy of Poseidon. 17 الحلقة 17 · The Merman Code 7 يونيو 2015 · 24 دقيقة When Erik dives down and touches one of the rock outcrops on Mako reef, he's transported into a sphere of endless water with no way out. 18 الحلقة 18 · The Siren 14 يونيو 2015 · 24 دقيقة When Sirena sees a video that shows a kayaker being lured by a mermaid's song, she starts to follow David obsessively, and he falls under her spell. 19 الحلقة 19 · Surprise! 21 يونيو 2015 · 24 دقيقة A surprise birthday party is in the works for Evie, who accidentally shrinks herself and falls into an aquarium after trying on Mimmi's mood ring. 20 الحلقة 20 · The Job 28 يونيو 2015 · 24 دقيقة Mimmi takes a job at the marine park, where she meets Chris, a young man who is desperate to get into a dolphin training program. 21 الحلقة 21 · New Orders 5 يوليو 2015 · 24 دقيقة On the night of the full moon, Zac and Ondina sneak away to Mako, and Ondina reveals her plan to destroy the chamber. 22 الحلقة 22 · The Last Dance 12 يوليو 2015 · 24 دقيقة Ondina doesn't want to choose between Erik and the pod when the pod returns. To cheer her up, Erik decides to throw a party in the café. 23 الحلقة 23 · Stay or Go 19 يوليو 2015 · 24 دقيقة At the marine park, Ondina and Mimmi get into trouble when a dolphin splashes them and a little girl sees them transform into mermaids. 24 الحلقة 24 · The Truth About Evie 26 يوليو 2015 · 24 دقيقة When Evie comes down with a fever that causes the temperature in the room to soar, Carly suspects that her friend is keeping a secret from her. 25 الحلقة 25 · The Trident Stone 2 أغسطس 2015 · 24 دقيقة When Erik learns that the trident stone is the missing element needed to activate the merman chamber, Zac gives it to the mermaids for safekeeping. 26 الحلقة 26 · The Chosen One 9 أغسطس 2015 · 24 دقيقة The chamber's true purpose is revealed: to drain the magic from all mermaids. Zac risks his life to shut it down and restore the mermaids' magic.